<template>
  <el-container class="home-container">
    <el-header>
      <div>
        <img src="../../assets/logo.jpg" alt="" />
        <span>电商后台管理系统</span>
      </div>

      <el-button type="info" @click="logout">退出</el-button></el-header
    >
    <el-container>
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" title="折叠/展开" @click="toggleCollapse">
          ||||
        </div>
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409eff"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="location"
        >
          <el-submenu
            :index="item.id + ''"
            v-for="item in menuList"
            :key="item.id"
          >
            <template slot="title">
              <i :class="item.icon"></i>
              <span>{{ item.name }}</span>
            </template>
            <el-menu-item
              :index="'/' + subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/' + subItem.path)"
              ><template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{ subItem.name }}</span>
              </template></el-menu-item
            >
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
// @ is an alias to /src
export default {
  name: 'Home',
  data () {
    return {
      menuList: [],
      isCollapse: false,
      location: ''
    }

  },
  created () {
    this.location = window.sessionStorage.getItem('location')
    this.getMenuList()
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      const { data: res } = await this.$http.get('api/admin/menu');
      console.log(res)
      if (res.errno === 0) {
        this.menuList = res.data
      }
    },
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    saveNavState (path) {
      this.location = path
      window.sessionStorage.setItem('location', path)
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 10px;
    }
    img {
      width: 60px;
      height: 60px;
      border-radius: 40px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}
.el-main {
  background-color: #eaedf1;
}
.iconfont {
  margin-right: 10px;
  font-size: 20px;
}
.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2rem;
  cursor: pointer;
}
</style>
